Local energy, thriving communities.

Local technical engineering and environmental consultancy

Technical, energy and environmental solutions to move forward with confidence.

Certificates, business activity licences, grants, technical documentation and environmental communication, with clear advice and direct contact.

With the basic details, I can prepare an initial cost estimate.

Registered engineer Direct communication Independent advice

I work with

Homeowners and communities Architects and practices Public bodies and businesses
Energy and grant news

Energy-efficiency grants in Catalonia: calls and updates

Arrel Energia services

Engineering and consultancy for homes, businesses, organisations and public bodies.

Every commission starts by understanding what you need and ends with technical documentation you can understand and rely on.

Homes, premises and buildings

Sale · Rental · Design · Completion

Energy performance certificates

Site visit, data collection, modelling, issue and registration. For new buildings, I work with architects at design and completion stages.

  • Homes, premises and buildings
  • Existing and new buildings
  • Clear improvement proposals
  • Follow-up to registered energy label
I need a certificate
Homes, industry and tertiary sector

Refurbishment · Efficiency · Grants

Energy refurbishment grants

Clearly differentiated grants for homes, industry and tertiary-sector buildings, with technical support from feasibility to final justification.

  • ICAEN for industry and tertiary buildings
  • INNOVAE for innovative projects
  • Next Generation Programme 4 for homes
  • Certificates, reports, applications and justification
Review my project
Households, communities and businesses

Individual · Shared · Optimisation

Solar self-consumption advice

I analyse consumption and alternatives so system sizing responds to your real energy-saving and self-consumption goals.

  • Bills and consumption habits
  • Power, production and surplus
  • Individual and shared systems
  • Investment, savings and payback
Optimise my installation
Businesses and organisations

Assessment · Evidence · Coordination

Energy Savings Certificates (CAE)

I assess whether an efficiency measure may generate Energy Savings Certificates and prepare the required technical evidence.

  • Identification of eligible measures
  • Energy savings evidence
  • Technical documentation
  • Coordination with CAE scheme participants
Assess an energy measure
Tendering companies

Tender documents · Carbon footprint · Environmental report

Environmental documentation for public tenders

I help tendering companies interpret environmental requirements and prepare a clear, coherent and evidence-based proposal.

  • Review of tender specifications and annexes
  • Environmental report for the bid
  • Carbon footprint and MITECO register
  • Plans, indicators and compliance evidence
Ask about this service
Premises and businesses

Opening · Technical documentation · Applications

Business activity licence applications

I support you in opening or regularising your business activity: assessing your case, preparing technical documentation and following up on procedures with the local council.

  • Initial assessment of the activity and premises
  • Technical reports, plans and certificates
  • Licences and notifications as applicable
  • Submission and follow-up on council requests
Discuss my activity licence
Public bodies, businesses and organisations

Strategy · Content · Materials

Environmental communication campaigns

I turn technical information into clear messages and materials that help public bodies, businesses and organisations inform, engage and inspire action.

  • Campaign concept, message and plan
  • Waste, energy, water and sustainability
  • Posters, leaflets, infographics and social media
  • Scripts, short videos and monitoring indicators
Plan a campaign

Professional resources

Editable packs and resources

Ready-to-use technical templates and tools to help you work independently and in an orderly way. Every pack includes Catalan and Spanish versions and downloads automatically after payment.

Launch offer: 15% off with code LLANCAMENT15View all four packs

How I work

An orderly process that builds confidence and avoids surprises.

You will speak directly to the engineer who reviews the case, carries out the visit, prepares the documents and follows its progress.

  1. Initial consultation

    I listen to your goal and review the available documents.

  2. Site visit and assessment

    I collect the necessary data and analyse realistic options.

  3. Documents and procedures

    I prepare, explain and submit the agreed documentation.

  4. Follow-up to completion

    I answer requests and support you until the contracted stage is closed.

Gemma Roigé Castellví, agricultural technical engineer and founder of Arrel Energia
Gemma Roigé CastellvíEnginyera Tècnica Agrícola

The person behind Arrel Energia

I’m Gemma, an agricultural technical engineer.

I combine experience in local government and public services with energy certification, business activities, grants and environmental management.

Arrel Energia offers a clear, rigorous and personal service: independent technical judgement, knowledge of public procedures and open communication so you can decide with confidence.

CETAFC registered engineer no. 5323 Master’s in Environmental Engineering Local government experience

Close to you

Local service in Camp de Tarragona. Applications across Catalonia.

Site visits and local services are mainly provided in Camp de Tarragona. For grants and technical procedures, I also work throughout Catalonia, including Programme 4 in Barcelona.

Let’s discuss your project

Tell me what you need and we will identify the best way forward.

Tell me what type of property you have, where it is and what you want to do. I can then prepare an initial cost estimate and explain the next steps.

Direct contactYou will speak directly to the engineer reviewing your case.

Contact me directly, with no intermediary platforms or referral fees.